Which type of attribute should you create?

You are creating a SQL Server Master Data Services (MDS) model. This model is used to
store a master list of products.
An attribute must be added to the Product entity to define the sales manager responsible for
each product.
You need to create an attribute in the Product entity that prevents users from entering invalid
sales manager values.
Which type of attribute should you create?

A.
Recursive

B.
Explicit

C.
Domain-based

D.
User-defined

E.
Derived

F.
Parent

Explanation:
References:
http://msdn.microsoft.com/en-us/library/bb190163.aspx
http://msdn.microsoft.com/en-us/library/ee633737.aspx
http://msdn.microsoft.com/en-us/library/ee633759.aspx
http://msdn.microsoft.com/en-us/library/ee633745.aspx

http://msdn.microsoft.com/en-us/library/ee633724.aspx
http://msdn.microsoft.com/en-us/library/ee633733.aspx
http://msdn.microsoft.com/en-us/library/ff487058.aspx